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WILLIAM P. WRIGHT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELFAND COLLINS W. WALTON, OF SAME PLACE.

Letters Patent No. 76,685, dated April 14, 1868.,

IMPROVEMENT IN PROCESS FOR TREATING MIISLIN FOR SWEAT-LININGS, &c., FORHATS.

i'tlgn some rtftmh in in these Eaters gluten amt mating and at flgtsmut,

TO ALL WHOM IT MAY CONCERN Be it known that I, WILLIAM P. WRIGHT, of thecity and county of Philadelphia, and State of Pennsylvania, haveinvented a new and improved Process for Treating Muslin for Straw-HatSweats, &e.; and I do hereby declare that the following is a full,clear, and exact-description of my process. g T I The object of myinvention is to obtain, by a process hereinafter described, an oiledmuslin for straw-hat v sweats, &c., which will have suilicientelasticity about it to permit its being stretched aroundin the hat,without breaking the muslin or peeling oil the oil. The oiled muslin nowused for sweats, owing to its stillness, breaks, peels ofl',.andpucltcrs, and is diilicult to keep in place. i A ,j

, To enable others skilled in the artto make and use my invention, Iwill now proceed to describe the process. I first take ordinary muslinand slightly stiller) it with a size; I then thoroughly dryit, and passitthrough a calender, of ordinary construction. A calender is a machine,consisting of a number of heavy iron rollers. contained in a massiveframe; the rollers are connected with a long lever, loaded with weightsat the further extremity, by which, or by means of screws, almost anyamount of force maybe applied. -.lhis pressure and friction produce onthe muslin a finish or gloss, flatten the threads, and press themtogether, or, as I might say, make the meshes smaller, and it is by thedrawing up and flattening out of the threads thatIget the desired springand elasticity.- I then, after passing the muslin-through theabove-described process, proceed to apply the oil to the muslin, in theusual manner.

Having thus described my invention and its process, what'I claim, anddesire to secure by Letters Patent of the United States, is-

The within-described process for treating muslin for hat-sweats, Ste, soas to give it elasticity and pliability,

as herein set forth and described.

Witnesses:

CHARLES H. Evans, IsAAc R. OAKFORD.

WILLIAM P. WRIGHT.

